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AssigneeZeus Industrial Products, Inc.
InventorsZahidul Wahab, Guillermo Alpizar, Patrick Cooper, Jeffrey M. Cox, Laurence C. Gonzalez, Daniel Green, Edward Rast, Bernard Salvador, Ravinder Singh, Douglas Tourville, Franklin Villagra
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The present disclosure provides catheters comprising polytetrafluoroethylene (PTFE) tubes with advantageous combinations of strength, flexibility, and size. Such tubes can exhibit features including an average wall thickness of 0.001″ or less, a tensile stress at break of greater than 5000 psi, and a storage modulus of less than 100,000 psi at 37° C. These tubes can be also be provided independently (i.e., not within a catheter) and can be employed in various applications.
A catheter comprising a passageway surrounded by walls, and further comprising a polytetrafluoroethylene (PTFE) tubular liner within the passageway, the PTFE tubular liner comprising:
A polytetrafluoroethylene (PTFE) tube comprising:
A polytetrafluoroethylene (PTFE) tube having a characteristic tensile curve with two distinct segments between 0 to 50% elongation with a first segment having an average tensile modulus of 100,000 psi or less and a second segment having a tensile modulus of 25,000 psi or less but greater than 2,500 psi, wherein the PTFE tube has a tensile stress of 3000 psi or less at 5% elongation.
A PTFE layer over a metallic core, wherein the PTFE layer has an average thickness of about 0.001 inch or less, exhibiting an average tensile stress at break greater than 5,000 psi and an average storage modulus of less than 100,000 psi at 23° C.
Dependencies are inferred from the claim text.